The reason I would like to get coverage from startup blogs is because my startup makes a tool for startup founders. I'm hoping that the people who read these blogs are my market demographic.
The startup in question: http://domiy.com
http://www.leandomainsearch.com has been adding some filters, but I would like to see the ability to permanently remove certain terms we would never use.
I started working on the site only 4 weeks ago and I've had people using it for the past week (~200 sign ups). I'm adding features and improvements all the time.
The reason I'm asking my question about blogs now is not because I plan to try to show it to any bloggers right now. I'd just like to start building the relationships now so that I will have some sway when I'm ready to try and get coverage.
Right now I'm looking to implement some of the improvements that have been suggested by the users I picked up in my initial Show HN post. I'll think about having another one after that to see what people think of the new features.
And you lose a lot of that value when you go to second or third tier startup blogs. You're much better off going for blogs which are in the same field as your startup (i.e. a health startup should go for health blogs) as you're much more likely to find actual users there.